Brick-mold



UNITED STATES TFT FFH?.`

JOEL SXV. ANDREWS, OF NORRISTOVN, PENNSYLVANIA.

BRICK-MOLD.

Specification of` Letters Patent No. 23,067, dated March 1, 1859;

To all 'whom fitumay concern:

Be it known that I, Jenn WV. ANDREWS, of Norristown, Montgomery county,in the State of Pennsylvania', have invented certain new and usefulImprovements in Brick-Molds; and I do hereby declare the following to bea full, clear, and exact description of the same, reference being had tothe accompanying drawings and to the letters of reference markedthereon.

My invention relates to improvements in that kind of brick molds inwhich movable bottoms are used for pushing or delivering the bricks uponthe drying floor, when formed, from the molds, and in which two or moremolds are combined in the same frame, and consists essentially ofpivoted handles, connected by links or otherwise, to longitudinal barsto which the bottoms of the molds are secured in such a manner that whenthe molds are inverted the weight of the bottoms of the molds assiststhe pivoted handles, &c., in ejecting the bricks Vfrom their respectivemolds without much effort on the part of the operator,

Referring to the drawings which form part of this specification,Figure 1. represents an outside view of the bottoms of the molds, Fig.2. a longitudinal sectional view of Fig. l, through the line R, S, Fig.3, a top view, and Fig. 4. a transverse section of Fig. 3, through theline T, V.

The same letters of reference, refer to like parts on all the drawings.

A, A, represent the sides of the molds eX- tei'iding beyond the. endpieces B, B, to support the aXis pins or screws CZ, (Z, el, cl, of thehandles D, D, and projecting below the bottoms C, C, &c., a distanceequal to the thickness of the bars F, F.

The division pieces B, B, &c. as well as those at the B B are let in thesides A, A, and are permanently secured to them.

The bottoms C C &c., are made somewhat smaller in size than the molds inorder to move freely within them and are permanently secured to the barsF, F. The ends of these bars project beyond the ends of the molds andare perforated to receive the connecting links H, H, H, H, which latterare jointed to the inner edge of the handles by the staples or eyes z' iz' In order to allow the bottoms to pass into the molds, all the crosspieces B are notched to the depth of 0, 0, as those in Fig. et. Intothese notches the bars F F, pass and play freely up and down therein.Thesedepressions j, j, 1n the handles D, D, make the holding of thelatter secure'and easy for the hands when the molds are inverted and thehandles turn.

The corner stop pieces K, K, K,I K, serve to prevent the bott-oms frompassing quite out of the molds as well as to adjust them to form theproper depth of molds in common with the stay pieces E, E, and the barsF, F, when the molds are in the press to receive the clay, rest upon thebed, and form the support for the bottoms C, C.

On inspection of Fig. 2, it will be seen that when the molds are in aposition to receive clay and pressure, the bottoms have receded from thetop a sufleie-nt distance to determine the proper thickness for thebricks, at the same time, the bars F, F, are even with'the bottom edgeof the sides A, A, and both rest upon the bed; the whole formlng acomplete arrangement, occupying but little more room vertically, thanthe ordinary form of molds in which movable bottoms are not used.

Further inspection of Fig. 2, will exhibit the manner in which the leverhandles operates to eject the bricks from vtheir molds when the latterare inverted.

Suppose the molds containing the bricks inverted and resting with thedepressions j j upon the linger ends of the operator, the handles D Dbeing free to rotate on the screws Z d &c., then by raising the molds upthe handles as they rotate, operate upon the rods F F and force theirmovable bottoms a suflicient distance through their respective molds toeject the bricks.

lVhen the molds are freed from their bricks and turned back to theiroriginal po sition, it will be seen that the gravity of the movablebottoms will right all the working parts without any eort on the part ofthe operator. This is a very important matter in brick making, the lossof even a moment or the expenditure of the slightest effort at everyobearing of the molds would amount in the aggregate to a largepercentage of the time employed.

Brick molds are usually made larger at top than at the bottom and verycoarse sand is used upon them to facilitate the removal of the bricksfrom them upon the drying floor, and in places where coarse sand cannotbe obtained and it becomes necessary to use fine sand upon the molds agreat difficulty is experienced in ejectin` the bricks from their molds,thereby spoiling thc shape oit the bricks, consequently a vast number ofthem have to be returned to the clay pit for remolding.

My improvement enables me to make my brick molds the same size atbottom, and top, so as to make a perfectly square brick, also to use aliner sand upon the molds to free them, which gives the bricks a muchsmoother surface than in the old methods Where the molds With permanentbot-toms and use of my improvement, I Will now say 15 The arrangement ofthe pivoted handles 20A D D links H H and bars F F connected to movablebottoms C C all substantially in the manner and for the purpose setforth.

JOEL W. ANDRFVS.

IVitnesses:

B. F. VAN COURT, L. E. CoRsoN.

